Liquid metal embrittlement of T91 and 316L steels by heavy liquid metals: A fracture mechanics assessment

被引：31

作者：

Auger, T. ^{[1
]}

Hamouche, Z. ^{[1
]}

Medina-Almazan, L. ^{[1
]}

Gorse, D. ^{[1
]}

机构：

[1] CECM, CNRS, UPR 2801, F-94407 Vitry Sur Seine, France

来源：

JOURNAL OF NUCLEAR MATERIALS | 2008年 / 377卷 / 01期

关键词：

11;

D O I：

10.1016/j.jnucmat.2008.02.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LME of the martensitic T91 and the austenitic 316L steels have been investigated in the CCT geometry in the plane-stress condition. Using such a geometry, premature cracking induced by a liquid metal (PbBi and Hg) can be studied using a fracture mechanics approach based on CTOD, J-Delta a and fracture assessment diagram. One is able to measure a reduction of the crack tip blunting and a reduction of the energy required for crack propagation induced by the liquid metal. In spite of some limitations, this qualitative evaluation shows that liquid metals do not induce strong embrittlement on steels in plane-stress condition. Rather, the effect of the liquid metal seems to promote a fracture mode by plastic collapse linked with strain localization. It indicates that the materials, in spite of a potential embrittlement, should still be acceptable in terms of safety criteria. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：253 / 260

页数：8

共 11 条

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